Steamships Ahoy - ibb & obb

Steam will begin offering
ibb & obb in under two hours, though those interested in this co-op,
gravity-defying puzzle/platformer have until June 2nd to take advantage of the
game's 20% preorder discount (thanks [VG] Reagle). Here's word on how this will
turn your world upside down: "ibb & obb is a two player cooperative game set in
a puzzle filled world where gravity goes both up and down. You can only succeed
by working closely together. Find a friend for some true local co-op couch fun
or match up online."